With a few hundred stores throughout Midwestern United States Kum & Go convenience stores and gas stations have been serving the public since 1959. There was not much information available online in regards to Kum & Go and buying postage stamps so I decided to send them an email to see if I could find some more information.
Thank you for reaching out! None of our locations operate a USPS dropbox, and very few of them sell stamps. It’s a scattered amount of stores that do sell the stamps, so it’s not generalized to one area or district. I’m sorry I’m not of much help!
As you can see only "very few" of their convenience stores sell stamps and they are scattered throughout so finding a store that sells postage stamps would involve calling the individual store or simply asking next time you fill up. If you are not in a rush I would recommend trying to find postal stamps in either a different brand of gas station or from one of the many other locations you can buy stamps.
Kum & Go was founded in 1959 in Hampton Iowa under the name Hampton Oil. It's aim was to sell the oil products of William A Krause and Tony S. Gentle. In 1963 the company began opening their first convenience stores/gas stations throughout Iowa and surrounding states. In 1975 the name was changed to Kum & Go bringing all of the companies name under a single brand using the initials of the company founders (Krause and Gentle).
In the late 90's Kum & Go expanded rapidly. Building new stores throughout the country and also purchasing existing stores of other companies helping the company become one of the biggest privately owned companies in the country. Today Kum & Go employs nearly 4000 people and its annual revenue is multiple billions per year.